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An advertisement consists of a rectangular printed region plus 2-cm margins on the sides and 6-cm margins at top and bottom. If the area of the printed region is to be 238 cm , find the dimensions of the printed region that minimize the total area. V 714 Printed region: / = W= 3 783x -x2 A company's revenue for selling x (thousand) items is given by R(x) = x2 + 783 Find the value of x that maximizes the revenue and find the maximum revenue. x = , maximum revenue is $ Round your answer to three decimal places. A car is traveling at 112 km/h due south at a point _ kilometer north of an intersection. A police car is traveling at 96 km/h due west at a point - kilometer due east of the same intersection. At that 5 instant, the radar in the police car measures the rate at which the distance between the two cars is changing. What does the radar gun register? km/h